package com.voice.call.utils;

import javax.crypto.Cipher;
import javax.crypto.spec.SecretKeySpec;

public class AESEncryptUtil {
	
	public static final String APP_KEY ="UxCn6hNCtvYOB%ED";
	
	/***
	 * 加密
	 * @param sSrc  加密内容
	 * @param sKey  加密key
	 * @return
	 */
    public static String encrypt(String sSrc, String sKey) {
    	
    	try {
    		if (sKey == null) {
                System.out.print("Key为空null");
                return null;
            }
            //1.aes加密
            byte[] raw = sKey.getBytes("utf-8");
            SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES");
            Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");//"算法/模式/补码方式"
            cipher.init(Cipher.ENCRYPT_MODE, skeySpec);
            byte[] encrypted = cipher.doFinal(sSrc.getBytes("utf-8"));

            //2.此处使用BASE64做转码功能，同时能起到2次加密的作用。
            return Base64.encode(encrypted);
			
		} catch (Exception e) {
			e.printStackTrace();
			return null;
		}
        
    }
    
    /***
     * 解密
     * @param sSrc  解密内容
     * @param sKey  解密key
     * @return
     */
    public static String decrypt(String sSrc, String sKey)  {
        try {
            // 判断Key是否正确
            if (sKey == null) {
                System.out.print("Key为空null");
                return null;
            }
            byte[] raw = sKey.getBytes("utf-8");
            SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES");
            Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
            cipher.init(Cipher.DECRYPT_MODE, skeySpec);
            
            //1.先用base64解密
            byte[] encrypted1 = Base64.decode(sSrc);
            try {
            	//2.aes解密
                byte[] original = cipher.doFinal(encrypted1);
                String originalString = new String(original,"utf-8");
                return originalString;
            } catch (Exception e) {
                System.out.println(e.toString());
                return null;
            }
        } catch (Exception ex) {
            System.out.println(ex.toString());
            return null;
        }
    }

}
